import React, { useState, useEffect, PropsWithChildren } from "react";
import { connect } from "react-redux";
import { Card, Button } from "antd";
import NavHeader from "@/components/NavHeader";
import { getLesson } from "@/api/home";
import { RouteComponentProps } from "react-router";
import Lesson from "@/typings/lesson";
import { StaticContext } from "react-router";
import { LessonResult } from "@/typings/lesson";
import actions from "@/store/actions/cart";
import { CombinedState } from "@/store/reducers";
import "./index.less";
const { Meta } = Card;
interface Params {
    id: string;
}
type RouteProps = RouteComponentProps<Params, StaticContext, Lesson>;
type StateProps = ReturnType<typeof mapStateToProps>;
type DispatchProps = typeof actions;

type Props = PropsWithChildren<RouteProps & StateProps & DispatchProps>;

function Detail(props: Props) {
    let [lesson, setLesson] = useState<Lesson>({} as Lesson);
    useEffect(() => {
        (async () => {
            let lesson: Lesson = props.location.state;
            if (!lesson) {
                let id = props.match.params.id;
                let result: LessonResult = await getLesson<LessonResult>(id);
                if (result.success) lesson = result.data;
            }
            setLesson(lesson);
        })();
    }, []);
    const addCartItem = (lesson: Lesson) => {
        //https://developer.mozilla.org/zh-CN/docs/Web/API/Element/getBoundingClientRect
        let video: HTMLVideoElement = document.querySelector("#lesson-video");

        let cart: HTMLSpanElement = document.querySelector(
            ".anticon.anticon-shopping-cart"
        );
        let clonedVideo: HTMLVideoElement = video.cloneNode(
            true
        ) as HTMLVideoElement;
        let videoWith = video.offsetWidth;
        let videoHeight = video.offsetHeight;
        let cartWith = cart.offsetWidth;
        let cartHeight = cart.offsetHeight;
        let videoLeft = video.getBoundingClientRect().left;
        let videoTop = video.getBoundingClientRect().top;
        let cartRight = cart.getBoundingClientRect().right;
        let cartBottom = cart.getBoundingClientRect().bottom;
        clonedVideo.style.cssText = `
          z-index: 1000;
          opacity:0.8;
          position:fixed;
          width:${videoWith}px;
          height:${videoHeight}px;
          top:${videoTop}px;
          left:${videoLeft}px;
          transition: all 2s ease-in-out;
        `;
        document.body.appendChild(clonedVideo);
        setTimeout(function () {
            clonedVideo.style.left = cartRight - cartWith / 2 + "px";
            clonedVideo.style.top = cartBottom - cartHeight / 2 + "px";
            clonedVideo.style.width = `0px`;
            clonedVideo.style.height = `0px`;
            clonedVideo.style.opacity = "50";
        }, 0);
        props.addCartItem(lesson);
    };
    return (
        <>
            <NavHeader history={props.history}>课程详情</NavHeader>
            <Card hoverable style={{ width: "100%" }} cover={<img id="lesson-video" src={lesson.poster} />} >
                <Meta
                    title={lesson.title}
                    description={
                        <>
                            <p>价格: ¥{lesson.price}元</p>
                            <p>
                                <Button className="add-cart" onClick={() => addCartItem(lesson)} > 加入购物车 </Button>
                            </p >
                        </>
                    }
                />
            </Card >
        </>
    );
}
/**
 * https://cubic-bezier.com/#0,0,1,1
 * linear:cubic-bezier(0,0,1,1)             匀速运动
 * ease:cubic-bezier(0.25,0.1,0.25,1)       先慢后快再慢
 * ease-in:cubic-bezier(0.42,0,1,1)         先慢后快
 * ease-out:cubic-bezier(0,0,0.58,1)        先快后慢
 * ease-in-out:cubic-bezier(0.42,0,0.58,1)  先慢后快再慢
 */
let mapStateToProps = (state: CombinedState): CombinedState => state;
export default connect(mapStateToProps, actions)(Detail);